<div class="left-nav">
    <div id="side-nav">
        {volist name='menus' id='vo'}
        <ul id="nav">
            <li>
                <a href="javascript:;">
                    <i class="layui-icon">{$vo.logo}</i>
                    <cite>{$vo.name}</cite>
                    <i class="iconfont nav_right">&#xe697;</i>
                </a>
                <ul class="sub-menu">
                    {notempty name='vo.child'}
                    {volist name='vo.child' id='voo'}
                    <li>
                        <a _href="{:url($voo['identification'])}">
                            <i class="iconfont">&#xe6a7;</i>
                            <cite>{$voo.name}</cite>
                        </a>
                    </li >
                    {/volist}
                    {/notempty}
                </ul>
            </li>
        </ul>
        {/volist}
    </div>
</div>